A21 Amber Quad-Loop Filament Incandescent Bulb

$14Regular

$10Member

FREE SHIPPING

Early lightbulb developers often used multiple filaments to create a brighter light. Our reproduction of one of the most popular carbon-filament styles – patented by Thomas Edison – uses a tungsten filament and possesses the glass-tip construction typical of early manufacturing. To showcase its shape and ambient glow, position the bulb behind a clear shade or within an exposed socket.